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<head>
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    <title>note</title>
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<body>
    <div class="parent">
        <div class="son1"></div>
        <div class="son2"></div>
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    <script>
        // 获取到有回车换行符的节点
        

        //带回车的标签对象
       
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        //不带回车的标签对象
        
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